RSH(1) NetBSD General Commands Manual RSH(1)
NAMErsh -- remote shell
SYNOPSISrsh [-46dn] [-lusername] [-pport] host [command]
rsh [-46dn] [-pport] username@host [command]
DESCRIPTIONrsh executes command on host.
rsh copies its standard input to the remote command, the standard output
of the remote command to its standard output, and the standard error of
the remote command to its standard error. Interrupt, quit and terminate
signals are propagated to the remote command; rsh normally terminates
when the remote command does. The options are as follows:
-4 Use IPv4 addresses only.
-6 Use IPv6 addresses only.
-d The -d option turns on socket debugging (using
setsockopt(2)) on the TCP sockets used for communication
with the remote host.
-lusername By default, the remote username is the same as the local
username. The -l option or the username@host format allow
the remote name to be specified.
-n The -n option redirects input from the special device
/dev/null (see the BUGS section of this manual page).
-pport Uses the given port instead of the one assigned to the ser-
vice ``shell''. May be given either as symbolic name or as
number. If no command is given, note that rlogin(1) is
started, which may need a different daemon (rlogind(8)
instead of rshd(8)) running on the server; you want to pass
the rshd(8) port number in that case.
If no command is specified, you will be logged in on the remote host
using rlogin(1).
Shell metacharacters which are not quoted are interpreted on local
machine, while quoted metacharacters are interpreted on the remote
machine. For example, the command
rsh otherhost cat remotefile >> localfile
appends the remote file remotefile to the local file localfile, while
rsh otherhost cat remotefile ">>" other_remotefile
appends remotefile to other_remotefile.
FILES
/etc/hosts
SEE ALSOrcmd(1), rlogin(1), rcmd(3), hosts.equiv(5), rhosts(5), environ(7)HISTORY
The rsh command appeared in 4.2BSD.
BUGS
If you are using csh(1) and put a rsh in the background without redirect-
ing its input away from the terminal, it will block even if no reads are
posted by the remote command. If no input is desired you should redirect
the input of rsh to /dev/null using the -n option.
You cannot run an interactive command (like rogue(6) or vi(1)) using rsh;
use rlogin(1) instead.
Stop signals stop the local rsh process only; this is arguably wrong, but
currently hard to fix for reasons too complicated to explain here.
NetBSD 6.0 March 9, 2005 NetBSD 6.0

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